X0306 4 2020-02-19 0 0001636519 Madison Square Garden Co MSG 0001754973 D'Ambrosio Philip Gerard TWO PENNSYLVANIA PLAZA NEW YORK NY 10121 0 1 0 0 SVP, Treasurer Class A Common Stock 2020-02-19 4 S 0 100 314.43 D 3322 D Class A Common Stock 2020-02-20 4 S 0 75 315.61 D 3247 D A total of 100 Class A Shares of the Issuer were sold by the Reporting Person on the open market at a weighted average per share price of $314.43 USD on February 19, 2020. Sale prices ranged from $314.25 to $314.75. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transactions were effected. A total of 75 Class A Shares of the Issuer were sold by the Reporting Person on the open market at a weighted average per share price of $315.61 USD on February 20, 2020. Sale prices ranged from $315.25 to $316.10. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transactions were effected. /s/ Mark C. Cresitello, Attorney-in-Fact for Philip D'Ambrosio 2020-02-21